EP1430942A1 - Matériau filtrant, corps de filtration et procédé de fabrication de matériau filtrant - Google Patents

Matériau filtrant, corps de filtration et procédé de fabrication de matériau filtrant Download PDF

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Publication number
EP1430942A1
EP1430942A1 EP03028427A EP03028427A EP1430942A1 EP 1430942 A1 EP1430942 A1 EP 1430942A1 EP 03028427 A EP03028427 A EP 03028427A EP 03028427 A EP03028427 A EP 03028427A EP 1430942 A1 EP1430942 A1 EP 1430942A1
Authority
EP
European Patent Office
Prior art keywords
filter material
filter
grid elements
grid
welded
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03028427A
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German (de)
English (en)
Inventor
Peter Wirtz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GKD Gebr Kufferath AG
Original Assignee
GKD Gebr Kufferath AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GKD Gebr Kufferath AG filed Critical GKD Gebr Kufferath AG
Publication of EP1430942A1 publication Critical patent/EP1430942A1/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/10—Filter screens essentially made of metal
    • B01D39/12—Filter screens essentially made of metal of wire gauze; of knitted wire; of expanded metal

Definitions

  • the invention relates on the one hand to a filter material consisting of two overlapping ones Grid elements and a filter body and another method for producing a filter material from several grid elements.
  • Filter materials consisting of two overlapping grid elements, are known in many ways from the prior art.
  • the individual grid elements sintered batchwise over a longer period of time.
  • the individual grid elements go in their common contact areas an intimate connection to each other so that the lattice elements are reliably joined together to form a multilayer filter material.
  • a disadvantage of the filter materials produced by sintering is that the sintering process of the lattice elements only takes place batchwise and as a result is relatively expensive.
  • a sintered connection Large contact areas are required to ensure a sufficiently firm connection between individual components. In the case of the grid elements of the filter material, however, this means that large areas of the Lattice elements occupied by the sintered connection and lost as a filter surface go.
  • the object of the invention is to overcome the disadvantages of the known filter materials to eliminate and further develop the filter materials.
  • the object of the present invention is based on a filter material solved two overlapping grid elements, in which the grid elements have a welded connection to one another.
  • filter material means a material that is permeable to a certain degree or one has a specially structured surface to perform a filter function to be able to.
  • the invention also extends to materials which look similar but are not used for filtering. Such materials are used as wall elements, claddings, Wind brakes or used in terms of their acoustic properties.
  • “Lattice element” is understood to mean materials which, owing to their Structure have a certain porosity.
  • welded connection here includes connections in which a material, in contrast to sintering, beyond its melting point is heated and materials heated up to the melt in the area of their Melt the melt together. So far, the materials have become more such Lattice elements in a sintering process are only heated to a lesser extent than in a welding process.
  • the mesh elements can now be used to weld filter material can also be welded to a material web in which the actual Filter material a material web with a length of more than six meters, preferably more than twelve meters.
  • the grid elements any length, such as a twenty Meters of filter material to be welded.
  • the material web a Width of more than 0.5 m, preferably of more than 0.6 m.
  • the lattice elements have structural surveys and deepening and in the area the contact points are welded together.
  • the lattice elements are more advantageous due to the existing surveys Only connected to each other at a few contact points. This is it is possible to weld with a high current and a short one Produce welding time, so that thereby the lattice structure of the lattice elements largely preserved and only in the immediate area the weld itself may be affected. hereby the actual filter function of the filter material remains even after welding the lattice elements are preserved over a large area.
  • the surveys ensure that there are contiguous Grid elements have a sufficient distance from each other and the lattice elements do not cover their openings and close here.
  • a sufficiently firm connection between the lattice elements of the filter material is already guaranteed if the filter material has more than one welded connection per 0.5 cm 2 .
  • the filter element has more than 5 welded connections, preferably more than 20 welded connections, per cm 2 .
  • the number of welded connections is structurally particularly simple vary if at least one grid element is between 5 or 10 and 1500 or 1200 threads per cm.
  • An embodiment variant provides that the overlapping grid elements have a different structure. At least two welded mesh elements that are different from each other Having structure, give the filter material a particularly good stability.
  • a preferred embodiment variant provides that a grid element is finer is as another grid element. This forms the finer grid element due to the finer structure, a kind of filter device for the filter material and the coarser grating element accordingly forms a type of support device of the filter element.
  • a grid element has openings a diameter of more than 5 mm, preferably with a diameter of more than 20 mm, and threads with a diameter of over 2 mm having.
  • Such a lattice element is particularly suitable structurally as a kind of support device.
  • a grid element has openings with a diameter of 5 mm or less, preferably less than 2 mm.
  • the diameter of the openings can be as small as one Value of 0.005 mm must be reduced.
  • a filter material with a coarse grid element can be particularly simple can be realized if the grid element is an expanded metal.
  • Tissue is particularly good, as it has openings with a diameter of less than 2 mm can be manufactured particularly easily.
  • the filter material has more than two overlapping grid elements.
  • a particularly preferred embodiment variant of a filter material sees before that a lattice element with a coarser structure between two lattice elements is arranged with a finer structure. This supports this Grid element of the coarser structure the two grid elements of the finer Structure, so that this results in a very stiff filter material.
  • the fine grid elements preferably consist of a Fabric and the coarser grid element is preferably an expanded metal.
  • the individual lattice elements consist of identical materials. It is also possible that the overlapping Lattice elements consist of different materials.
  • the individual lattice elements consist of identical materials.
  • the overlapping Lattice elements consist of different materials.
  • an expanded metal made of a rustproof stainless steel and attached to the Expanded metal welded fabric made of a titanium material.
  • overlapping grid elements of a filter material in particular be particularly durable connected in the side area of the filter material
  • the filter element is welded with a weld bead having.
  • two grid elements between which are arranged at least in a central area a further grid element is held together by such a flanged seam in the side areas.
  • a shaped filter material can be specially shaped weld well at the weld seam to a filter body.
  • a large-area filter material which is also particularly stiff, can advantageously be realized if a filter material has two grid elements with a fine structure, each with lattice elements are welded with a coarser structure and between the grid elements spacers are arranged with the coarser structures.
  • the filter material gets a clean side edge, if that Filter material in the direction of its longitudinal axis in the edge areas Has metal strips.
  • the sheet metal strip is preferably less than 100 mm wide less than 20 mm.
  • the sheet material is obtained by such a sheet metal strip an additional stiffness.
  • the filter material can be welded particularly well in the area of the metal strips if, in addition, the sheet metal strip is at least partially survives over at least one grid element.
  • the filter material has a frame.
  • a frame gives the filter material an all round advantageous conclusion, so that possibly sharp edges the edges of the grid elements welded together are avoided can. This in particular reduces the risk of injury during further processing of the filter material.
  • the frame is at least partially between two grid elements is arranged. So the frame is at least partially rebuilt by two grid elements. This allows the frame with the welded joints that overlap.
  • the object of the invention is achieved by a filter body, which has the filter material described above. Since that filter material according to the invention compared to conventional filter material has fewer welded connections, is the filter material according to the invention easy to shape.
  • the filter body is a filter frame, a Filter plate, a U-profile filter, a filter ring and / or a filter cylinder. This makes the filter material very versatile.
  • the object of the invention is a method for Manufacture of a filter material solved from several grid elements, at which the grid elements are welded together.
  • a filter material can be produced particularly economically if the Lattice elements are welded into an endless material web. This is So far not possible because the known filter material webs in sintering furnaces are manufactured and are therefore very limited in their dimensions.
  • Grid elements when welding with a pressure of more than 30 bar, preferably of more than 50 bar, are pressed together. There are Applications where the contact pressure is raised to over 90 bar becomes.
  • the lattice elements with a sweat pulse of less than 10 milliseconds or less than 5 milliseconds, preferably about 2 milliseconds are advantageous because of this Maintain the structures of the lattice elements over a large area stay. This advantageously makes the structure of the lattice elements by melting the material only in the immediate area the welds changed.
  • One method variant provides that the filter material with sheet metal elements provided and the sheet metal elements are welded together, so that a cylindrical filter body results from the filter material.
  • Figures 1 and 2 each show a grid element 1 and 2, each from a variety of warp threads 3 and 4 and from a variety of Weft threads 5 and 6 exist.
  • the threads 3 and 5 of the grid element 1 have a larger diameter and are also more closely interwoven, so that the grid element 1 compared to the grating element 2, a much coarser mesh size having.
  • Both grid elements 1 and 2 are not rolled, so that the grid elements 1 and 2 at the so-called “nodes” 7 and 8 (here only as examples once numbered) compared to the other areas of the grid elements 1 and 2 are increased. If the grid elements 1 and 2 are flat on each other placed, they essentially only touch in the areas of their nodes 7 and 8, at which they then advantageously become one Filter material 9 (see Figure 3) can be welded.
  • the filter material 9 consists of three overlapping ones Grid elements 1 and 2, being on the finer grid element 2, a coarser grid element 1 is attached on both sides.
  • the filter material 9 thus receives a robust protective layer 10, behind which the actual filter layer 11 is arranged.
  • the filter layer provides very good stability 11 additionally arranged a drainage layer 12, so that the finer filter layer 11 on the one hand from the protective layer 10 and on the other hand from the Drainage layer 12 is surrounded.
  • the filter material 9 welded according to the invention is used Compared to conventional sintering processes, one rolling process each the grid elements 1 and 2 saved.
  • the rolling process is at conventional manufacturing processes have been necessary to switch between individuals Grid elements 1 and 2 have a large, extensive contact area for the To produce the sintering process.
  • the filter material 9 according to the invention in contrast to conventional filter material are produced as an endless material web and is accordingly cheaper to produce than conventional filter material in a sintering process.
  • the filter material segment 14 shown in FIG. 4 consists of two fine ones Grid elements 2 between which a coarser grid element 1 is placed.
  • the coarser grid element 1 is made smaller in this exemplary embodiment than the two fine grid elements 2, so that both fine grid elements 2 abut one another directly in their edge region 15 and there welded linearly all around with a flanged seam 16 are.
  • Such an arrangement enables a flat termination of the filter material segment 14 in the edge region 15.
  • the coarser grid element 1 is in one with the finer grid elements 2 Variety of welds 17 welded together so that the individual Lattice elements 1 and 2 very close to a compact filter material segment 14 are connected.
  • the filter material 18 shown in FIG. 5 essentially consists of four identical grid elements 19, which are stacked are.
  • the lattice elements 19 have a sinusoidal shape, so that the grid elements 19 essentially in the region of their elevations 20 are welded together. This results in a filter material 18 which is only welded together at a few contact points 13 (see FIG. 3) without the structure of the grid elements during the welding process 19 is excessively affected. Only in the area the welded elevations 20 becomes the material of the grid elements 19 melted so that the individual lattice elements 1 and 2 adhere to them Connect positions with each other.
  • Filter material 24 produced consists of a total of four grid elements 21 and 22.
  • each form a grid element 21 and 22 a filter material layer 25 and 26 and the filter material layer 25 and 26 are separated from one another by spacers 27 (here numbered only as examples) Cut. This is between the individual filter material layers 25 and 26 there is a corresponding empty space 28 (here only exemplarily numbered).
  • the grid elements 22 in the interior of the filter material 24 indicate their protrusions 22A welded against the spacer 27 on.
  • the filter material segment 29 shown in FIG. 7 consists of a fine one Grid element 30 and a coarser grid element 31 (see Figure 8).
  • the finer grid element 30 is a woven fabric and the coarser grid element 31 is an expanded metal. Both grid elements 30 and 31 are inflated Areas 32 welded together.
  • the filter material segment 29 is shaped into a filter cylinder 33.
  • the lateral edge regions 29A and 29B of the filter material segment 29 each provided with a metal strip 34 and 35, on which the filter material segment 29 structurally special to a filter cylinder 33 can be easily welded.
  • a filter cylinder 33 produced in this way is particularly well suited to the original diameter during a later application of the filter cylinder 33 to expand. This allows the filter cylinder 33 particularly easy to change operating conditions during operation be adjusted. Such an area of application lies in the area of application the so-called "sand control sking".
EP03028427A 2002-12-18 2003-12-11 Matériau filtrant, corps de filtration et procédé de fabrication de matériau filtrant Withdrawn EP1430942A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10259654 2002-12-18
DE10259654A DE10259654A1 (de) 2002-12-18 2002-12-18 Filtermaterial, Filterkörper und Verfahren zum Herstellen eines Filtermaterials

Publications (1)

Publication Number Publication Date
EP1430942A1 true EP1430942A1 (fr) 2004-06-23

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EP03028427A Withdrawn EP1430942A1 (fr) 2002-12-18 2003-12-11 Matériau filtrant, corps de filtration et procédé de fabrication de matériau filtrant

Country Status (5)

Country Link
US (1) US20040173521A1 (fr)
EP (1) EP1430942A1 (fr)
CN (1) CN1515346A (fr)
DE (1) DE10259654A1 (fr)
NO (1) NO20035636L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005054816A1 (de) * 2005-11-15 2007-05-16 Haver & Boecker Ohg Poröser Körper
DE202008010888U1 (de) 2008-08-15 2009-01-08 Melicon Gmbh Lochblech mit aufgeschweißtem Metallgewebe

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015088003A1 (fr) * 2013-12-13 2015-06-18 株式会社フジコー Filtre de purification de l'air et purificateur d'air qui en est équipé
CN104436859B (zh) * 2014-11-13 2017-02-15 杭州美固科技有限公司 一种不锈钢滤网的加工工艺

Citations (3)

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Publication number Priority date Publication date Assignee Title
DE2147735A1 (de) * 1971-09-24 1973-03-29 Battelle Institut E V Verfahren zur herstellung von gegenstaenden oder halbzeug aus verbundwerkstoffen mit metallischer matrix und mit verstaerkungseinlagerungen
US5059326A (en) * 1990-08-09 1991-10-22 Schwaebische Huettenwerke Gmbh Fluid filter and method of manufacture
JPH05103927A (ja) * 1991-10-16 1993-04-27 Hiyoshi Kogyo Kk フイルター及びその製造方法

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US175120A (en) * 1876-03-21 litchfield
US5076924A (en) * 1987-05-04 1991-12-31 Hydrotech Nils-Ake Persson Ab Filter plate
DE29514868U1 (de) * 1995-09-15 1995-11-23 Fiedler Heinrich Gmbh Filter aus Blechmaterial
JP4231109B2 (ja) * 1996-10-17 2009-02-25 アレヴァ エンペー ゲゼルシャフト ミット ベシュレンクテル ハフツング エーロゾルフィルタとその利用方法
WO1998019771A1 (fr) * 1996-11-07 1998-05-14 Velcon Filters, Inc. Cartouche de separation et son procede de fabrication
US6736270B2 (en) * 1998-10-30 2004-05-18 Varco I/P, Inc. Glued screens for shale shakers
US6514408B1 (en) * 2000-05-30 2003-02-04 Purolator Facet, Inc. Welded particle control screen assemblies
US7438812B2 (en) * 2001-04-10 2008-10-21 Parker-Hannifin Corporation Filter element and method of making
US6698595B2 (en) * 2001-04-19 2004-03-02 Weatherford/Lamb, Inc. Screen material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2147735A1 (de) * 1971-09-24 1973-03-29 Battelle Institut E V Verfahren zur herstellung von gegenstaenden oder halbzeug aus verbundwerkstoffen mit metallischer matrix und mit verstaerkungseinlagerungen
US5059326A (en) * 1990-08-09 1991-10-22 Schwaebische Huettenwerke Gmbh Fluid filter and method of manufacture
JPH05103927A (ja) * 1991-10-16 1993-04-27 Hiyoshi Kogyo Kk フイルター及びその製造方法

Non-Patent Citations (1)

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DATABASE WPI Section Ch Week 199321, Derwent World Patents Index; Class J01, AN 1993-171909, XP002275794 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005054816A1 (de) * 2005-11-15 2007-05-16 Haver & Boecker Ohg Poröser Körper
DE202008010888U1 (de) 2008-08-15 2009-01-08 Melicon Gmbh Lochblech mit aufgeschweißtem Metallgewebe

Also Published As

Publication number Publication date
NO20035636D0 (no) 2003-12-17
NO20035636L (no) 2004-06-21
CN1515346A (zh) 2004-07-28
US20040173521A1 (en) 2004-09-09
DE10259654A1 (de) 2004-07-01

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